EUVD-2026-78889Published

Apptainer: Incorrect path matching for 'limit container paths' directive

Collected exploitation and prediction evidence

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

cve-program · CVE-2026-48785

Published

Apptainer is an open source container platform. Prior to version 1.5.1, Image.AuthorizedPath applies plain string-prefix matching to the limit container paths directive in apptainer.conf, so an allowed path such as /data/safe also authorizes a sibling path such as /data/safe-but-unsafe. A local user can consequently run a container from a directory outside the administrator's intended allowlist when Apptainer operates in setuid mode. Installations that do not use setuid mode or do not configure limit container paths are not affected, and unrestricted user namespaces already allow users to run containers of their choice. This issue is fixed in version 1.5.1.

Source published: 15 Sep 2026 17:19:24 UTC
Source modified: 15 Sep 2026 17:38:10 UTC
Observed here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

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CVSS 3.1 · 4.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L

euvd · EUVD-2026-78889

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Sep 15, 2026, 5:19:24 PM

dateUpdated: Sep 15, 2026, 5:38:10 PM

3 related source bulletins · separate from aliases

openSUSE-SU-2026:20942-1: Security update for apptainer

CVE-2026-48785

SUSE-SU-2026:2609-1: Security update for apptainer

CVE-2026-24137 · CVE-2026-33186 · CVE-2026-33814 · CVE-2026-34986 · CVE-2026-39821 · CVE-2026-39827 · CVE-2026-39828 · CVE-2026-39829 · CVE-2026-39830 · CVE-2026-39831 · CVE-2026-39832 · CVE-2026-39833 · CVE-2026-39834 · CVE-2026-39835 · CVE-2026-42508 · CVE-2026-46595 · CVE-2026-46597 · CVE-2026-46598 · CVE-2026-48785

openSUSE-SU-2026:10993-1: apptainer-1.5.1-1.1 on GA media

CVE-2026-48785

Source published: Sep 15, 2026, 5:19:24 PM (timezone not stated)
Source modified: Sep 15, 2026, 5:38:10 PM (timezone not stated)
Observed here: 11 Nov 2026 13:02:48 UTC
Source terms: ENISA EUVD · source terms and attribution apply

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: euvd · ENISA EUVD · source terms and attribution apply. Source text is retained; field grouping and change labels are provided by ChangeIntel.

EUVD CVSS 3.1 · 4.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L

nvd · CVE-2026-48785

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Awaiting Analysis

Weakness classifications: CWE-22

Original publisher date fields

published: 2026-09-15T18:17:21.640

lastModified: 2026-09-25T14:10:13.927

Source published: 15 Sep 2026 18:17:21 UTC
Source modified: 25 Sep 2026 14:10:13 UTC
Observed here: 25 Oct 2026 12:17:32 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: nvd · NIST NVD usage terms; underlying source attribution retained. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 3.1 · [email protected] · Secondary · 4.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L

osv · GHSA-cr2j-534f-mf3g

Published

### Impact The `limit container paths directive` in `apptainer.conf` is intended to allow a system administrator limit the paths from which containers can be run, under setuid mode. Due to incorrect matching of a path string, sibling directories with similar names may incorrectly be allowed. For example, the configuration: ``` limit container paths = /data/safe ``` Will also allow containers in /data/safe-but-unsafe to be run. ### Patches The issue is patched in apptainer version 1.5.1. ### Workarounds If developers do not use setuid mode or do not use the `limit container paths` functionality, then this issue does not affect their installation. Note that, as documented [1], if user namespaces are allowed for unrestricted use then this functionality does not stop users from running any container of their choice. If developers do use the `limit container paths` functionality they are advised to update. ### Credit This vulnerability was discovered and disclosed to the Apptainer project by Dave Trudgian of Sylabs. ### Resources [1] https://apptainer.org/docs/admin/latest/configfiles.html#limiting-container-execution

Source published: 26 Jun 2026 19:20:33 UTC
Source modified: 7 Jul 2026 16:11:14 UTC
Observed here: 24 Oct 2026 13:19:41 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · GitHub Advisory Database · CC-BY-4.0. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS_V3 · CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L

Publisher rating · MODERATE

osv · GO-2026-5805

Published

Apptainer has incorrect path matching for 'limit container paths' directive in github.com/apptainer/apptainer

Source published: 7 Jul 2026 15:26:32 UTC
Source modified: 7 Jul 2026 16:00:20 UTC
Observed here: 24 Oct 2026 13:19:41 UTC
Source terms: OSV · upstream source license applies

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · OSV · upstream source license applies. Source text is retained; field grouping and change labels are provided by ChangeIntel.